2004 Mercury Grand Marquis electrical system problems

I have had more problems with my 2004 grand marquis, the lights don't work, headlights go off while driving at night, airbags don't work, electrical, seats, steering, brakes, all of the electrical, catalytic convertor keeps going out, also engine problems, among many other things. I was in an accident, where my steering didn't work properly and I was hit by someone, not my fault, but my car ended up spinning so bad that I hit my head off of the steering and received injuries,,party in other car was not injured.

Tl* the contact owns a 2004 mercury grand marquis. The contact stated that the instrument panel malfunctioned. The vehicle was taken to an independent mechanic. The technician was unable to diagnose the failure. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 30,035 and the current mileage was 30,050.